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Event-oriented approaches to geographic phenomena / Michael F. Worboys in International journal of geographical information science IJGIS, vol 19 n° 1 (january 2005)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 19 n° 1 (january 2005) . - pp 1 - 28 Titre : Event-oriented approaches to geographic phenomena Type de document : Article/Communication Auteurs : Michael F. Worboys, Auteur Année de publication : 2005 Article en page(s) : pp 1 - 28 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] continuité géographique [Termes IGN] mise à jour en continu [Termes IGN] modèle conceptuel de données localisées [Termes IGN] modèle de simulation [Termes IGN] modèle dynamique [Termes IGN] modélisation spatio-temporelle [Termes IGN] objet géographique [Termes IGN] ontologie [Termes IGN] prédiction [Termes IGN] système d'information géographique [Termes IGN] temps instantané Résumé : (Auteur) This paper is about the information-theoretic foundations upon which useful explanatory and predictive models of dynamic geographic phenomena can be based. It traces the development of these foundations, from sequences of temporal snapshots, through object life histories, to event chronicles. A crucial ontological distinction is drawn between 'things' and 'happenings', that is between continuant and occurrent entities. Up to now, most research has focused on representing the evolution through time of geographic things, whether objects or fields. This paper argues that 'happenings' should be upgraded to an equal status with 'things' in dynamic geographic representations and suggests ways of doing this. The main research focus of the paper is the application of an algebraic approach, previously developed mainly in the context of computational processes, to real-world happenings. It develops a pure event-oriented theory of space and time, and suggests the possibilities that the theory provides by using it to represent the motion of a vehicle through a region. The paper contains a discussion of the scalability and applicability of this model to geographic domains and illustrates some of the ideas by reference to a geo-sensor example. The paper concludes by summarizing its main ideas, relating the research to other germane areas not covered in the developmental survey, and indicating directions for future work. Numéro de notice : A2005-019 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810412331280167 En ligne : https://doi.org/10.1080/13658810412331280167 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27158 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-05012	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Alternative representations of in-stream habitat: classification using remote sensing, hydraulic modelling, and fuzzy logic / C. Legleiter in International journal of geographical information science IJGIS, vol 19 n° 1 (january 2005)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 19 n° 1 (january 2005) . - pp 29 - 50 Titre : Alternative representations of in-stream habitat: classification using remote sensing, hydraulic modelling, and fuzzy logic Type de document : Article/Communication Auteurs : C. Legleiter, Auteur ; Michael F. Goodchild, Auteur Année de publication : 2005 Article en page(s) : pp 29 - 50 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique [Termes IGN] classification floue [Termes IGN] cours d'eau [Termes IGN] écosystème [Termes IGN] habitat animal [Termes IGN] incertitude des données [Termes IGN] limite indéterminée [Termes IGN] logique floue [Termes IGN] modèle hydrographique [Termes IGN] zone inondable Résumé : (Auteur) Improved techniques are needed to characterize complex fluvial systems and monitor ecologically important, yet highly vulnerable riverine environments. This paper explores potential alternatives to traditional mapping of in-stream habitat and presents fuzzy set theory as a means of departing from the rigid, Boolean, object-based framework. We utilize hydrodynamic modeling, remotely sensed data, and fuzzy clustering to obtain classifications that allow for continuous partial membership and gradual transitions among habitat types. Methods of assessing cluster validity are available, but data quality is a crucial consideration. Crisp, vector-based representations can be derived from raster fuzzy classifications by applying a threshold to maximum membership values. This process results in conditional objects separated by ambiguous transition zones, and a compromise must be reached between the proportion of the channel assigned to polygons and the certainty with which this assignment can be made. Spatial patterns of classification uncertainty can also be used to identify areas of confusion, infer boundaries of variable width, and highlight areas of increased habitat diversity. Hydraulic modeling and remote sensing complement one another and, together with field work, could provide a more realistic representation of the fluvial environment. Numéro de notice : A2005-020 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810412331280220 En ligne : https://doi.org/10.1080/13658810412331280220 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27159 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-05012	RAB	Revue	Centre de documentation	En réserve L003	Disponible

A stochastic spatial decision support system based on Promethee / O. Marinoni in International journal of geographical information science IJGIS, vol 19 n° 1 (january 2005)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 19 n° 1 (january 2005) . - pp 51 - 68 Titre : A stochastic spatial decision support system based on Promethee Type de document : Article/Communication Auteurs : O. Marinoni, Auteur Année de publication : 2005 Article en page(s) : pp 51 - 68 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique [Termes IGN] analyse multicritère [Termes IGN] implémentation (informatique) [Termes IGN] outil d'aide à la décision [Termes IGN] processus stochastique [Termes IGN] système d'information géographique Résumé : (Auteur) PROMETHEE is a well known multicriteria decision support method which gives insight into the preference structure of a whole set of alternatives. The retrieved preference information is used to give the partial or complete preorder of the available alternatives which makes PROMETHEE a well suited decision support tool if a ranking of available alternatives is desired. A relatively low degree of mathematical complexity makes PROMETHEE an attractive method for all non experts involved in a decision process. This paper discusses the integration of PROMETHEE in a GIS. It will be shown how the combination of a sophisticated decision support methodology with powerful spatial analysis and visualisation capabilities can be applied to evaluating decision alternatives that are made up of regular or irregular shaped zones of raster cells. Deterministic as well as stochastic PROMETHEE approaches are considered and general recommendations on the use of stochastic simulation methods are given. Moreover, a framework is presented which facilitates the application of the proposed approaches. Numéro de notice : A2005-021 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810412331280176 En ligne : https://doi.org/10.1080/13658810412331280176 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27160 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-05012	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Production of integrated digital terrain model from multiple datasets of different quality / T. Podobnikar in International journal of geographical information science IJGIS, vol 19 n° 1 (january 2005)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 19 n° 1 (january 2005) . - pp 69 - 89 Titre : Production of integrated digital terrain model from multiple datasets of different quality Type de document : Article/Communication Auteurs : T. Podobnikar, Auteur Année de publication : 2005 Article en page(s) : pp 69 - 89 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] base de données localisées [Termes IGN] contrôle qualité [Termes IGN] géomorphologie [Termes IGN] intégration de données [Termes IGN] interpolation [Termes IGN] modèle numérique de terrain [Termes IGN] pondération [Termes IGN] qualité des données [Termes IGN] source de données Résumé : (Auteur) The objective of this paper is to discuss methods of producing a digital terrain model (DTM) from different quality datasets. The current quantity of DTMs and other spatial databases offers potential for an enhanced production of DTMs with a better quality than is currently obtainable. Two methods of integrating different datasets are described in this paper. The first is based on the simultaneous interpolation of all useful spatial data sources, and is supported by a proper prediction function according to the weights. The second - weighted sum of data with geomorphologic enhancement -sequentially combines individual datasets according to their weights and is maintained by geomorphologic enhancement. The weights in both methods depend on the output of the used spatial datasets quality control. The methods are tested with regard to original methodological solutions of DTM production developed for the integration of datasets. Numéro de notice : A2005-022 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810412331280130 En ligne : https://doi.org/10.1080/13658810412331280130 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27161 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-05012	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Prediction of anopheles minimus habitat in India: a tool for malaria management / Akhil Srivastava in International journal of geographical information science IJGIS, vol 19 n° 1 (january 2005)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 19 n° 1 (january 2005) . - pp 91 - 97 Titre : Prediction of anopheles minimus habitat in India: a tool for malaria management Type de document : Article/Communication Auteurs : Akhil Srivastava, Auteur ; B.N. Nagpal, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 91 - 97 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] ArcInfo [Termes IGN] carte thématique [Termes IGN] épidémie [Termes IGN] forêt [Termes IGN] habitat animal [Termes IGN] Inde [Termes IGN] maladie parasitaire [Termes IGN] médecine humaine [Termes IGN] numérisation de carte [Termes IGN] répartition géographique [Termes IGN] risque sanitaire [Termes IGN] surveillance sanitaire [Termes IGN] système d'information géographique Résumé : (Auteur) This paper reports research to predict the distribution of An. minimus, a malaria vector in forest fringe areas using GIS to support precision surveys for malaria control. Because An. minimus is a forest-associated species, generalized thematic maps (1: 600 000) of forst cover, soil type, altitude, rainfall and temperature were used. Digitalization, overlaying, integration and analysis of thematic maps were done using Arc/Info 8.1 NT and Arc/View 3.2 (GIS, ESRI) software. GIS delineated favourable areas for An. minimus where the species is likely to be found, and precision survey can be conducted. Precision field surveys in selected locations of favourable/non-favourable areas were carried out. The species could be found in all location designated as a favourable area and was absent in non-favourable areas. In two districts, one where the species is reported to have disappeared in the early 1950s and the other where it was not reported in earlier surveys, GIS helped in precision surveys, and An. minimus was found. The technique can quickly cover vast and inaccessible areas and is easy to duplicate in other parts of the world to assist cost effective control of malaria. It can also delineate areas favourable for any species of flora and fauna to help precision surveys. Numéro de notice : A2005-023 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Article DOI : 10.1080/13658810412331280194 En ligne : https://doi.org/10.1080/13658810412331280194 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27162 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-05011	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-05012	RAB	Revue	Centre de documentation	En réserve L003	Disponible